^BAWJ — W50SG | Zulu Code

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Description

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Did you know

The Wärtsilä 50SG spark-ignited gas engine was introduced in autumn 2010. Its design builds upon the proven gas technology found in the smaller Wärtsilä 34SG engine and the Wärtsilä 50DF dual-fuel engine technology.
The W50SG is part of Wärtsilä's spark-ignited gas engine family, positioned as a larger and more powerful option compared to models like the Wärtsilä 34SG. It shares a high level of commonality in components with the Wärtsilä 50DF, a dual-fuel sibling.
This model is chosen for its high electrical efficiency, particularly in combined-cycle mode, and its fast-starting capability, which allows for rapid response to fluctuations in renewable energy generation. It can operate on various gaseous fuels, including natural gas, biogas, and synthetic methane, and is capable of hydrogen blending, supporting decarbonization efforts.

Model	Cylinder Bore (mm)	Piston Stroke (mm)	Engine Speed (rpm)	Power/Cylinder (kW)
W50SG	500	580	500/514	1045/1070
W50DF	500	580	500/514	~1000-1045
W32	320	400	720/750	450/460

Sources: wartsila.com; icm.edu.pl; industrialmarinepower.com; facebook.com; scribd.com; wartsila.com; diagon.ai

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Spares

Positions 1–12 are the same part on every engine and are safe to quote by code. 13 and 14 vary with cylinder count.

1Cylinder Liner — page under construction
2Piston — page under construction
3Fuel Injector Nozzle — page under construction
4Cylinder Head / Cover — page under construction
5Connecting Rod — page under construction
6Main Bearing — page under construction
7Bottom-End (Crankpin / Con-Rod) Bearing — page under construction
8Fuel Injection Pump — page under construction
9Fuel Injector (Complete) — page under construction
10Exhaust Valve — page under construction
11Inlet Valve — page under construction
12Piston Ring Set — page under construction
13Crankshaft — page under construction
14Camshaft — page under construction

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Code map

^B  A  W  J
 │  │  │  └── Model: W50SG
 │  │  └───── Make: Wärtsilä
 │  └──────── Equipment: Aux Engine
 └─────────── System: Aux Engine Power Generation